<%@ page import="java.util.HashMap" %>
<%@ page import="java.util.Map" %><%--
  Created by IntelliJ IDEA.
  User: WIzarder
  Date: 2021/5/31
  Time: 16:14
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
        <%  //当map的key值是包含一些运算符的时候怎么输出该key值对应的value值
            Map<String,Object> map = new HashMap<>();
            map.put("a+a+a","value1");
            map.put("b-b-b","value2");
            map.put("c.c.c","value2");
            request.setAttribute("map",map);
        %>
        ${map["a+a+a"]}
        ${map['b-b-b']}
        ${map["c.c.c"]}
</body>
</html>
